Wrench



- March 29, 1932. BUTLER 1,851,562

WRENCH Filed June 5, 1931 V J II/l I 70 Z-;w27zZ07 Z0697? fiZdZZe 7Patented Mar. 29, 1932: i

UNITED STATES PATENT OF 'Ep ROBERT BUTLER, or nosroinivrnssnonusnrrsWanner: Applicationfiled June; 5, 1931. Serial No. 542,301."

An object of this-invention is to provide a from the fixed jaw beinglimitedby the -stop wrench of the quick adjusting type which is ofsimple and durable construction, econom- 1 ical" to manufacture, and'which may be quickly and conveniently adjusted. Another object is toprovide a Wrench designedto minimize the danger of accidentaldisengagement of the movableja-w from its adjusted or locked position,and further to pro vide means affording a protection against accidentalinjury to the spring mechanism which normally holds the movable jaw inlocked or adjusted position.

; positlon;

Further ob'eots and advantages will be apparent from a consideration ofthe following description and accompanying drawings which exemplify oneembodiment of this invention chosen for the purpose of illustration.

In the drawings:

Fig. 1 is a side elevation of the wrench with the movable jaw inoperative position;

Fig. 2 is a view similar to Fig. 1 showing the movable jaw moved fromits operative Fig. 3 3-3 of Fig. 1'; and

Fig. 4 is acomposite view of the spr ng .member.

' Referring tothe drawings, the improved wrench shown therein comprisesa shank 10 having a ribbed portion 11 providing a longitudinallyextending abutment, and a fixed jaw 12 integral with one end of theshank. The sleeve 18 slidably mounted on the shank 10 is integral withthe movablejaw 14: and carries theworm or thumb screw 15 which engagesthe teeth 16 on the shank. The

, sleeve is provided with a flaring opening or bore, as shown in Figs. 1and 3, which permits a rocking movement on the shank todisengage theworm 15 from the teeth 16 thereby permitting the sleeve to be moved 5freely along the shank, its movement away is an enlarged section on theline pin 17. 1

The sleeve is provided with an opening18' and a slot 19 adjacent to therib ll of the shank. The benteup end 21 of the U-shaped 5o spring isanchored in opening. 18 and its opposite end 22,.disposed in slot 19,yield- "ingly'engages the rib llfirrespective of the.

relative position of the sleeve-and shankand normally holds the worm 15in operativeen: x

able jaw in adjusted positionandpermitting 6;}

a fine adjustment from thatposition.

It willbe noted that the wrench herein shown and described is free fromprojecting parts and consequentlythe danger of accidental disengagementof the movable jaw from its locked or adjusted position isgreatl 7 1yminimized. Furthermore the spring member 20 being housed between thesleeve and shank is afforded a substantial protection against accidentalinjury. The springfQO is of such simple an'detiicient design that itmaybe manufactured economically, assembled with facility and, in emergency,replaced by an-improvised spring. r

Iclaim; v v 1 A wrenchof the character described comprising a shankhaving teeth on' one of its longitudinal edges, a fixed-jaw integralwith one end of the shank, a longitudinally exi tending abutment onsaidshank, sleeve slidably mounted on said shank andpro- Q vided with anopening and a slottedp'on. l tion adjacent to said abutment, a movable I1 jaw integral with said sleeve, a worm car- I ried by the sleeve andengageable with the 9,

this 3d day ofJnne, I931.

teeth on said shank, said sleeve having a rocking mQVementon said shankto' disengage the Worm from the teeth therebyto permitthe sleeve to bemoved longitudinally of said shank, and means normally wholding thewonnand teeth in operative engagement, said means comprising a U-shapedspring having bent-11p end portions, one of said ends being anchored inthe opening in said sleeve andthe other end disposed in said slot andyielding-1y engaging saidabutment vlrrespect ve of the relative 1305161011 ofxsmd sleei e andshank.

Slgned by meat Boston, Massachusetts,

K0131 331 BUTLE'iij 'f f

